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16 votes
4 answers
3k views

How were large UNIX installs managed in the 80s/90s?

12 votes
3 answers
2k views

ZX Spectrum interrupt handling: maskable and NMI

22 votes
5 answers
5k views

Why is the Unix command "touch" called touch? How is it related to new/create or update?

15 votes
4 answers
4k views

Did DOS on the early, slow machines ever fail to handle interrupts timely, and what happened if it did?

13 votes
1 answer
481 views

Did CRAY's computers have a guard bit?

8 votes
1 answer
295 views

How compatible with AppleSoft BASIC was Coleco Adam SmartBASIC?

6 votes
2 answers
2k views

What's the name of this "Burroughs" computer?

3 votes
0 answers
145 views

Looking for TRS-80 4P terminal emulation software

0 votes
1 answer
123 views

Connect Epson HX-20 to PC via MAX3232 board

6 votes
2 answers
640 views

RS232 to connect to Terminal from Epson HX-20?

21 votes
6 answers
4k views

Why isn't the WDC 65816 available in "externally" 16-bit versions?

0 votes
0 answers
187 views

MegaTech arcade board - video compatibility with LCDs

4 votes
1 answer
873 views

How is the Commodore BASIC RND function seeded, depending on the argument?

12 votes
3 answers
2k views

How did old programs handle signal safety when there weren't the POSIX realtime signal extension?

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